Package org.apache.flink.table.sources

Class TableSourceValidation

java.lang.Object

org.apache.flink.table.sources.TableSourceValidation

@Internal
public class TableSourceValidation
extends Object

Logic to validate TableSource types.

Method Summary

Modifier and Type	Method	Description
static boolean	hasProctimeAttribute(TableSource<?> tableSource)	Checks if the given TableSource defines a proctime attribute.
static boolean	hasRowtimeAttribute(TableSource<?> tableSource)	Checks if the given TableSource defines a rowtime attribute.
static void	validateTableSource(TableSource<?> tableSource, TableSchema schema)	Validates a TableSource.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

validateTableSource

public static void validateTableSource(TableSource<?> tableSource,
 TableSchema schema)

Validates a TableSource.

• checks that all fields of the schema can be resolved
• checks that resolved fields have the correct type
• checks that the time attributes are correctly configured.

Parameters:

tableSource - The TableSource for which the time attributes are checked.

hasRowtimeAttribute

public static boolean hasRowtimeAttribute(TableSource<?> tableSource)

Checks if the given TableSource defines a rowtime attribute.

Parameters:

tableSource - The table source to check.

Returns:

true if the given table source defines rowtime attribute

hasProctimeAttribute

public static boolean hasProctimeAttribute(TableSource<?> tableSource)

Checks if the given TableSource defines a proctime attribute.

Parameters:

tableSource - The table source to check.

Returns:

true if the given table source defines proctime attribute.